Sidewall of a pneumatic tire



FIG. 1 is a front elevational view of a sidewall of a pneumatic tire according to my new design; and,

FIG. 2 is a cross-sectional view thereof, taken generally along line 2—2 shown in FIG. 1.

The broken line showing of the tire is included for the purpose of illustrating environment and forms no part of the claimed design. 

The ornamental design for a sidewall of a pneumatic tire, as shown and described. 